HUBBLE ATLAS
Nighttime Sky View of Future Galaxy Merger: 3.85-3.9 Billion Years (Galaxy Collisions) — image from the Hubble Space Telescope

Illustrations

Nighttime Sky View of Future Galaxy Merger: 3.85-3.9 Billion Years

May 6, 2014 · ESA/Hubble · Galaxy Collisions

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During the first close approach, the sky is ablaze with new star formation, which is evident in a plethora of emission nebulae and open young star clusters.